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Subject[PATCH 10/10] leds: renesas: fix error handling
Date
bfe4c041 "leds: convert Renesas TPU LED driver to devm_kzalloc() and
cleanup error exit path" introduced a possible case in which r_tpu_probe
calls iounmap on a wild pointer. This changes the one case that was
missed in the same way as the other error paths.

Without this patch, building kota2_defconfig results in:

drivers/leds/leds-renesas-tpu.c: In function 'r_tpu_probe':
drivers/leds/leds-renesas-tpu.c:246:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
drivers/leds/leds-renesas-tpu.c:308:17: warning: 'p' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Magnus Damm <damm@opensource.se>

--- a/drivers/leds/leds-renesas-tpu.c
+++ b/drivers/leds/leds-renesas-tpu.c
@@ -247,7 +247,7 @@ static int __devinit r_tpu_probe(struct platform_device *pdev)

if (!cfg) {
dev_err(&pdev->dev, "missing platform data\n");
- goto err0;
+ return -ENODEV;
}

p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
---
drivers/leds/leds-renesas-tpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c
index 9ee12c2..771ea06 100644
--- a/drivers/leds/leds-renesas-tpu.c
+++ b/drivers/leds/leds-renesas-tpu.c
@@ -247,7 +247,7 @@ static int __devinit r_tpu_probe(struct platform_device *pdev)

if (!cfg) {
dev_err(&pdev->dev, "missing platform data\n");
- goto err0;
+ return -ENODEV;
}

p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
--
1.7.10


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